久久爱综合久久爱久久爱,间谍过家家第二季在线观看免费,国产美女在线精品免费观看网址,欧美+日本+国产+在线观看

Welcome to Fujian Yongjing Technology Co., Ltd. the website!

Contact us

Add: 18#, Xin'An Road, Shaowu City, Fujian, China
International Trade Dept.
Tel: +86-599-6655932/6654968
Fax: +86-599-6654591
Home Trade Dept. 
Tel: +86-599-6654866/6654968
Fax: +86-599-6655755
High-purity Chemicals Dept.
Tel: +86-599-6655536/6654968
Fax: +86-599-6655755


Products

Chemical Reagent Ammonium Bifluoride

Quality StandardGB/T 1278-1994

Molecular FormulaNH4HF2                             Molecular Weight57.05

Item

Index

A.R.

C.P.

Ammonium Bifluoride (NH4HF2)   w/%   ≥

98.0

97.0

Ignition residue(Sulfate) w/%   ≤

0.01

0.05

Chloride(Cl) w/%   ≤

0.001

0.005

Sulfate(以SO4計(jì))  w/%   ≤

0.005

0.01

Fluorosilicate(SIF6) w/%   ≤

0.2

0.5

Fe w/%   ≤

0.001

0.005

Heavy metal(Pb)  w/%   ≤

0.002

0.005

Properties
The product is a rhombohedra or flaky crystal. It can deliquesce easily and dissolve easily in water. It can dissolve in alcohol slightly. It can be resolved when it is affected by the heat or it is in hot water. It can corrode glass. It’s poisonous.
Application
The product can be used for glass frosting or extracting rare elements and used as a preservative or a mordant.
Storage
Moisture-proof and sealed preservation is needed.
Transport
It should be treated as inorganic poisonous goods.
Packing
The product is packed in a 25kg polythene plastic bag. Also pack it on consumer requests.

【Back】

Copyright(C)2017,Fujian Yongjing Technology Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice

久久久久久久精品免费久精品蜜桃 | 国产麻豆剧传媒精品国产AV| 久久99精品国产麻豆蜜芽| 野花日本免费观看大全3| 久久久久亚洲av片无码v | 欧美黑人巨大xxxxx| 亚洲AV无码一区东京热久久| 国产精品无码专区| 欧美日韩亚洲国产精品| 色婷婷av一区二区三区| 久久久久久精品一区二区三区日本| 东京热人妻系列无码专区 | 人妻少妇精品无码专区动漫| 亚洲熟女色情网中文字幕| 欧美成人精品一区二区免费| 韩国漫画漫免费观看免费| 亚洲色偷拍另类无码专区| 久久99久久99精品中文字幕| 久久久久久久波多野结衣高潮| 精品呦啊呦V视频在线观看| 国产无遮挡裸体免费视频在线观看| 小粉嫩精品a片在线视看| 四虎精品免费永久免费视频| 少妇激情av一区二区| 好久不见在线观看免费高清| 亚洲性视频| 久久久婷婷五月亚洲97号色| 亚洲AV午夜精品一区二区三区| 97久久精品午夜一区二区| 亚洲av无码乱码精品国产福利 | 国产午夜影视大全免费观看| 午夜精品久久久久久久99热| 国产裸体美女永久免费无遮挡| 午夜天堂av天堂久久久| 亚洲熟妇无码八AV在线播放| 国内少妇人妻丰满AV| 国产超碰人人做人人爽AV| av人摸人人人澡人人超碰导航| 美女张开腿给男人桶爽久久| 成人美女黄网站色大免费的| 亚洲熟妇无码AV无码|